“Yes, Khloe and Tristan are expecting and they are absolutely thrilled,” says a source. “This isn’t something they were in a rush to announce to the whole world, and it’s only been in just the past week or so that they’ve felt comfortable telling most of their inner circle. Things were complicated a bit by Kylie’s announcement as they don’t want to be seen as intruding on that moment for her but it is now reaching a point where Khloe doesn’t want to be openly lying to people, and just staying quiet isn’t going to work anymore.”

The insider adds: “This is something Khloe has wanted for years and years and yet it’s more than that: she didn’t want it unless she was in the right relationship for it. She never let it happen with Lamar, intentionally, and she never considered it with James or French or anyone else she has seen. But this is such a wonderful moment for her: not only is she going to be a mother, she is going to be raising a child with a man she truly loves. Everyone is over the moon for them both.”

According to another source, Kylie and Khloé are due around the same time.

“They are looking at it like a unifying experience for them as sisters,” the insider says. “Getting pregnant at the same time was totally unplanned but they are really happy about it.”